Integer overflow in Google Chrome V8
CVE-2025-10891 is a high-severity integer overflow vulnerability in the V8 JavaScript engine used by Google Chrome and other Chromium-based browsers. The issue affects Google Chrome prior to 140.0.7339.207/.208 on Windows and Mac and prior to 140.0.7339.207 on Linux. According to the provided content, the flaw is caused by insufficient bounds checking on certain arithmetic operations in V8. When attacker-controlled values exceed the maximum range of the underlying integer type, calculations can wrap and produce incorrect values that are then used in memory allocation or array indexing. This can lead to heap corruption when a victim opens a specially crafted HTML page containing malicious JavaScript. The content states that successful exploitation may allow arbitrary code execution in the context of the browser process.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An integer overflow vulnerability in the V8 component of Google Chrome that can allow remote code execution and potentially complete compromise of the vulnerable system.
An integer overflow vulnerability in Google Chrome's V8 JavaScript engine that can lead to heap corruption and potentially arbitrary code execution via crafted JavaScript in a malicious web page.
A high-severity integer overflow vulnerability in Chrome's V8 engine.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.